Update my answer to Exercise 2.85.

Modified is the following file:

	Exercise_2.85.scm

Thank you!
							Lawrence R. Amlord
							   Aug 16th, 2013
							   Fuzhou, China
Update my answer to Exercise 2.86.

Modified are the following 2 files:

	Exercise_2.86.pdf
	Exercise_2.86.tm

Thank you!
							Lawrence R. Amlord
							   Aug 16th, 2013
							   Fuzhou, China